Improvement in coking-furnaces



` 2Sheets--Sheet 1. H, ENGELMANN.

, Baking-Furnaces. NO. 141,779. PatentedA lIgustI2,-1873.

I I ,f II-I I I I I I l Z1 length, f iin/zaad AM. PHami/ruosR/:PH/c Ua Mx (assonne's mavfsg) 2 Sheets--Sheet 2.

H. ENGELMANN. Baking-Furnaces.-

PatentedAugust12,1873.

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1 Nv MYR x comprises any desired number of ovens, D,

l HENRY ENGELMANN, OF SALT LAKE CITY, UTAH TERRITORY.

IMPROVEMENT IN COKlNG-FURNACES.

Specification forming part of Letters Patent No. 141,779, dated August l2, 1873; application filed December 6, 1872.y

To all whom t may concern:

Beit known that I, HENRY ENGELMANN, of Salt Lake city, in the Territory of Utah, have invented certain Improvements in Ookin g-Furnaces, of which the following is a speciiication:

This invention consists in the combination of vertical flues arranged in the side walls of coking-ovens, of peculiar height, with gas or flame conduits diminishing in transverse area as the number of flues to be supplied diminishes in such manner that combustible gases to be burned in the ilues themselves, or llame and hot products of combustion from the burning of such gases in the conduits, or flame and hotproducts of combustion from a furnace connectin g with the conduits, will (one or the other, as the case may be) be uniformly distributed throughout whole series of ilues to uniformly heat the ovens throughout their length. The invention also comprises certain novel means of supplying the requisite quantity of air to the burning fuel, of equali'zing the draft of the heating-fines, and of facilitating the removal of the coked product from the oven.

Figure l is a vertical longitudinal section of a coking-furnace constructed according to my invention. Fig.2 is a transverse sectional view of the same taken inthe line g r s t u o w x of Fig. 3. Fig. 3 is a horizontal section of the same.

The outer portions of the furnace may be made of common brick, the inner, or those exposed to a high temperature, of fire-brick or like fire-resisting material. The furnace of great height and length, as compared with their width, the proportions of each oven being, say, from twenty to thirty feet in length, twelve feet in height, and eighteen inches in width, these proportions, or substantially such, in conjunction with the arrangement of the heating-nues E, insuring the transmission of heat throughout the contents by the laterallyradiated heat, because of the narrowness of the mass and the short distance from the flues to the central portions thereof. The aforesaid ues, marked E, are placedhinfth'e Walls F, which separate the parallel ovens from each other, the ilues in each wall forming a series or system longitudinal with the furnace. The

upper ends of the iiues of each series terminate in a longitudinal draft passage, G, the outlet of each flue being contracted or partially closed by a rebrick block, a, placed centrally therein. The lower ends of the lues of each series aforesaid communicate with a longitudinal conduit, H, which in the furnace,

constructed as shown in the drawings, may

constitute de facto a combustion-chamber, but which, when employed in the furnace described in the application A for a patent on a cokingfurnace of even date with this, will serve to properly distribute to the flues the gaseous fuel to beburned therein. In other cases the conduits f .fmay be so connected with a suitablyarrangedfurnace as to conduct and distribute therefrom to the iiues the hot gaseous products of combustion, ilame, Sac. The essential function of the conduits is the same in either case. Each of the horizontal draft-passages Gincreases in vertical diameter, in other Words, in transverse area, as it approaches the uptake I, in connection with which, through one of the ilues E, it terminates. This uptake is situated at the center1 of the furnace, as shown in Fig.

1,with the draft-passages from one-half of each series of vertical Ilues communicating with it from opposite directions, this arrangement being found much better in practice than to connect the entire series with an-uptake at lone end of the furnace. The conduits H at the bottom of the iiues also extend from each end of the furnace to the center. Each conduit connects, by an opening, bj, with a canal, J, which communicates with a gas-pro'ducin g furnace or other suitable source of Supply of gaseous fuel. In the front of each conduit are openings e, to admit air to the burning fu'el. Between the conduits and longitudinal therewith are airpassages d, opening laterally, as shown at a,

into the conduits to supply air along the length thereof. Each coking-oven is furnished at top with an outlet-pipe' provided with a suitable valve, by which the outflow of gases evolved from the material in the ovens may be checked to any extent required to permit the heat to ATEN'I QFFICE The combustible gases conducted from a suitable gas-generating furnace or its equivalent to and through a canal, J, pass through the openings b* to the conduits, and being there ignited pass up in iiame and hot prod,

ucts of combustion into the vertical lues. The heat radiated from the ues readily penetrates through the entire mass to be coked, owing to the narrowness of the ovens, and subjecting the same uniformly to a high initial and sustained heat enables lignites and similar materials refractory to ordinary coking treatment to be readily coked if mingled with due proportions of coal-tar or other asphaltic substance capable of depositing carbon when subjected to the elevated initial and sustained temperature just referred to.

It will be noticed that while each draft-passage G and each conduit H extends only to the center of the furnace the ovens extend the entire length thereof, and 'are furnished at their ends with openings mi", through which the material, after being coked, may be withdrawn. It will be noticed that by this arrangement of the openings m* (which are, of course, luted close with lire-brick when the ovens are in use) at the lower part of each end allows the coked material to be forced out through one by means of any suitable pushing device introduced at the other and Worked either by hand or power, this being, in fact, from the narrow proportions essential to the oven, the only economical and efficient method of removing the contents therefrom.

Ido not claim, independent of the novel combinations hereinbefore set forth, any part or portion of the subject-matter shown in the patent of W. G. Valentine, dated January 13, 1863; but

Having thus described my invention, what I claim as my invention is 1. The conduits H, of constantly-di1ninish ing transverse area in proportion as the number of iiues E diminishes, whereby the supply of gaseous fuel, dame, or het products of combustion, as the case may be, is uniformly distributed Vto the iiues to heat the coking-ovens, substantially as herein set forth.

2. The combination, with the conduits H leading to the flues E, of the air-inlets c, airpassages d, and openings a', substantially as and for the purpose specified.

3. The combination of the canal J with thc conduits H, constructed as described, and leading to the iiues E, substantially as and for the purpose specied.

4. The combination, with the ues E of the coking-ovens, of the draft-passages Gr increasing in transverse area as they approach the centrallylocated uptake I, substantially as andgfor the purpose specified.

5. The combination, with the coking-ovens, constructed and proportioned as described, of the openings mi, substantially as and for the purpose specified.

HENRY ENGELMANN.

Witnesses:

S. J. J oNAssoN, JAMES LOWE. 

